baber/WOPTO huggingface dataset:
Patent GB-1193773-A (GB)
Title: Control Valve
IPC: G05D16/10
Filed: 1968-01-18
Abstract: 1,193,773. Valves. BORG-WARNER CORP. 18 Jan., 1968 [13 Feb. 1967], No. 2855/68. Heading F2V. Valve spool 24 is urged against the action of spring 36, to throttle outlet 20, by the pressure drop across orifice 30, and has a shoulder 27 which is subjected to the downstream pressure via bore 35 and chamber 22 to assist spring 36 so that the effective throttling action is a function of the difference between the upstream and downstream pressures.
Patent GB-536672-A (GB)
Title: Improvements in rolling mills
IPC: B21B31/32
Filed: 1940-02-15
Abstract: 536,672. Roller mills ; hydraulic accumulators. MIRRLEES WATSON CO., Ltd. (South Coast Corporation). Feb. 15, 1940, No. 2856. [Class 59] [Also in Group XXIX] Compressed air from a tank 36 acts, via pipe 37, on the surface of oil in an accumulator 35. Hydraulic pressure is transmitted from the accumulator through pipe 34, cylinder 29, piston 28, plunger 27, pipe 22, cylinder 13, plunger 12, cap 11 and block 9 to a bearing block 8 forming part of the journal of a floating roll 7. The chamber 13 communicates with the block 9 by a conduit 19. Oil is admitted to the pipe 22 by valve 26 and to the pipe 34 by valve 47. A valve 42 connected to a byepass 41 controls the air pressure in the accumulator 35 also are provided safety valves 39 and 44, a check valve 40 and a hand-operated unloading valve 45. In a modification the accumulator is superposed on and forms part of the cylinder 29 and is filled by oil blown in from a reservoir by compressed air from the same source as that which communicates with the accumulator.
Patent GB-810195-A (GB)
Title: An improved telescopic joint
IPC: E04H15/60
Filed: 1955-01-31
Abstract: 810,195. Rod couplings. SEABORNE, J. Dec. 28, 1955 [Jan. 31, 1955], No. 2890/55. Class 99(1). [Also in Groups VII, X and XXV] A telescopic joint in which an inner tubular extension member 1 is rotatably and axially slidably held within a supporting member 2 comprises on one of the members spring loaded radially displaceable retaining means 10 which engage corresponding radial engaging surfaces on the other member so that an axial load cannot cause the radial displacement of the spring loaded retaining means and the collapse of the joint but which by relative rotation of the members can be brought into alignment with inclined disengaging surfaces on the other member which under axial load permits the joint to collapse by the radial displacement of the spring loaded retaining means. As shown the spring loaded retaining means are carried by the inner member 1 and each consists of a pin 10 having a cylindrical shank 11 with a rounded or domed end 11a. Two pins 10 are arranged diametrically opposite each other and their shanks 11 are urged through holes in the wall of the member 1 by a spring 9 which is contained in a sleeve 8. The radial engaging surfaces are provided on the upper edge of the member 2 and the projecting part of each shank 11 is slightly less in length than the width of the surfaces. Two lugs 3 project from the upper end of the member 2 and these are diametrically spaced and each is formed with an internal channel 4 having an inward slope forming one of the inclined disengaging surfaces. Thus the joint can be collapsed if the inner member 1 is raised slightly and rotated so that the pins 10 are aligned with the channels 4. An axial thrust on the inner member 2 will then cause the depression of the pins 10 into the member 1. The member 2 is formed with an internal flange 5 and the member 1 has an external flange 6 and a spring 7 is positioned between the flanges so that the members 1 and 2 cannot be completely separated. In a modification the lugs 3 are omitted and instead the wall of the member 2 is bent outwardly at two diametrically opposite points to form the channels 4. Notches are provided on the top wall of the member 2 between the channels 4 to form the radial engaging surfaces. In a modification in order that the joint can be fastened against collapse in a plurality of axial positions a plurality of pairs of pins 10 can be provided and these can either be axially aligned or angularly displaced. Alternatively a plurality of corresponding engaging and disengaging surfaces can be arranged at different axial levels for engagement by a single pair of pins 10.
Patent GB-1045329-A (GB)
Title: Improvements in switching systems for handling a plurality of electrical signals of different origin
IPC: H04N5/268
Filed: 1964-01-23
Abstract: 1,045,329. Television signal switching systems. COMPAGNIE FRANCAISE THOMSONHOUSTON. Jan. 23, 1964 [Jan. 23, 1963], No. 2974/64. Heading H4F. n a switching system, Fig. 1, for connecting any one of a plurality of input television signals EA, EB to output S the desired signal is selected by operating a push-button BPa, BPb in a preselector circuit 1 and the switching is effected by a subsequent frame synchronizing pulse St which operates a control device 3 and thereby causes a predetermined sequence of operations in the pre-selection circuit and a further switching circuit 2. The system utilizes normal and transfer channels 2 and 1 together with input gates P1, P11 controlled by the pushbuttons, further input gates P2, P22 controlled by relays Ra, Rb and output gates I1 and I2 controlled by circuit R. The complete sequence of operations involved in the transfer from input signal EA to input signal EB is illustrated in Fig. 2. The system normally rests with the selected signal connected to both normal and transfer channels. Thus initially with pushbutton BPa operated relay Ra is also operated and both input gates P1 and P2 are transmissive. Only output gate I2 is transmissive. Operation of push-button BPb mechanically releases BPa and substitutes input signal EB for signal EA in transfer channel 1. Relay Rb is prepared for operation and relay Ra is prepared for release. Operation of the pushbutton also sends a trigger pulse to a circuit C which provides a 30 ms. delay and then initiates a further 20-30 ms. period during which the first frame synchronizing pulse St is effective to start the switching sequence. The synchronizing pulse causes the production of a 60 ms. pulse which firstly operates circuit R controlling gates I1 and I2 to switch the output S from the normal channel to the transfer channel, thus changing from signal EA to signal EB, and secondly controls relays Ra and Rb by way of circuit Rv releasing the first and operating the second. Signal EB now appears in both the normal and transfer channels whilst signal EA is completely disconnected. At the end of the 60 ms. pulse circuit R restores output S to the normal channel and the system rests until a further switching operation is brought about by actuation of a push-button. Further input channels with associated push-buttons and relays may be connected to multiple points M1, M2, M3, M4. Instead of the normal signal change-over as described, a special effects signal generator Sd may be started into operation by the frame synchronizing pulse St, the generator producing a suitable signal for switching back and forth between the transfer and normal channels, i.e. between signals EA and EB, so as to produce a desired change-over effect. A detailed circuit for carrying out the invention is described with reference to Fig. 3 (not shown). The gates are formed of pairs of diodes. Trigger circuits provide the pulses.
Patent GB-547681-A (GB)
Title: Improvements in or relating to operating mechanisms for electric circuit interrupters
IPC: H01H33/56
Filed: 1941-03-07
Abstract: 547,681. Fluid-pressure servomotor-control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 7, 1941, No. 3121. Convention date, March 9, 1940. [Class 135] [Also in Group XXXVII] A fluid-operated gas-blast switch comprises, for each phase, a movable contact 28 which is rotatable about pivot 32 to engage and disengage a fixed contact 16 in an arc chute 22 supported on the blast pipe 12 on a main reservoir 6. Movement of the contact is effected by a double-acting piston 42 in a cylinder 40, Fig. 5, the piston rod 44 operating through a lever 48 a shaft 50 which is common to all the phases. Each contact is closed by a toggle 54, 56 moved overcentre against a stop 55, the toggle-link 54 having a cam surface 58 which engages a roller 60 on a lever 62 pivoted at 64 so as to open the blast valve 68 at each actuation. Similar control means are provided for each end of cylinder 40, comprising solenoid-operated opening and closing valves 70, 72 which communicate, respectively, with auxiliary reservoirs 83, 85 defined by barriers 86 in cylinders 82, 84 and adjustable along threaded rods 88 so as to provide gas-storage for a single operation. Each barrier comprises a threaded collar 90, a washer 92 of yieldable material, a metal washer 94, and lock nut 96 and washer 98. Air passes into cylinders 82, 84 by way of orifices 100 which have removable plugs 102 for adjusting the rate of flow. Operation of a solenoid 136 admits air from cylinder 82 or 84, through a valve 124 and passage 126 to depress a spring-piston 130 which first closes ports 134 in the valve casing and then depresses valve 108. The descent or ascent of piston 42 is initially rapid but slows up owing to the building-up of pressure behind the piston, due to the ports 134 of the other valve and also to the relatively small size of the auxiliary source 83 or 85 which may have only half the volume of cylinder 40. A switch, Fig. 1 (not shown), operated by shaft 50 de-energizes the solenoid at the end of the operating stroke, the springs returning the valve 108 and piston 130 to their closed positions. In order to obtain a quick reversal of piston 42 if the switch closes on to an overload and valve 70 is operated, the final closing movement of piston 42 lifts a rod 150 and opens a valve 144 against the action of spring 148, so enabling the initial return movement of the piston to take place quickly. The space 83 is made larger than 85 so as to ensure the switch opening on overload in the event of inadvertent operation of both solenoids 136.
Patent GB-178938-A (GB)
Title: An improvement in the construction of easels and other rests
IPC: A47B97/08
Filed: 1921-01-25
Abstract: 178,938. Casey, A. L. Jan. 25, 1921. Book &c. rests, - An easel, book-rest, or knee desk comprises two pairs of legs of unequal length hinged together at a and connected by folding metal stays jointed at g. The lower ends of the shorter legs are split at c to receive a detachable slotted ledge which rests on the user's knees. When the device is folded, the stays fold into slots m and the ledge is attached by the engagement of a keyhole slot with a screw i on one leg of the device.
Patent GB-753024-A (GB)
Title: Improvements in and relating to multi-stage "push-type" centrifugal machines
IPC: B04B3/02
Filed: 1954-02-04
Abstract: 753,024. Centrifugal filters. ESCHER WYSS AKT.-GES. Feb. 4, 1954 [Feb. 10, 1953], No. 3353/54. Class 46. In a strainer separator comprising circumferential screens through which the material to be treated passes in succession and a member serving to feed the material through the separator, two of the screens are axially reciprocatable and one of them is adapted to move the material through the next following screen. As shown, the screen 2 and the feed member 4 are axially fixed and the screens 1, 3 are axially reciprocatable. Screens 1, 2 have flanges 23, 24 which respectively push the material along screens 2, 3 towards the open outlet end of the separator. The flanges may be perforated to permit the material to be cooled by air. The feed member and the screens are rotated by a pulley 14 housing a fluidoperated piston 15 fixed on a shaft 9 carrying the reciprocatable screens 1, 3 and rotating within a hollow shaft 7 carrying the feed member and the screen 2. The material to be separated is fed through a fixed pipe 21 to a distributer 22 fixed to the feed member and the centrifuged material is discharged through an opening 26 in the casing 25. Pipes 30, 31 are provided for supplying washing or drying fluids to the material on the screens. The effective length of the screen 1 is greater than the length of the screen 2 which in turn is greater than the length of the screen 3, the effective screen length lying between 100 and 300 mm. The difference between the diameters of screens 2, 3 is greater than that between screens 1, 2. The outlet ends of the screens may be conical. In a modification (Fig. 2, not shown), the inner layer of the material on the screen 2 is removed by a radially adjustable scraper to be discharged without passing over the screen 3, and all the material passing over the screen 3 is deflected by a further scraper to discharge through the casing outlet without touching the casing walls. In a further modification the screens 1, 3 are fixed, and the member 4, the screen 2, and a further screen succeeding the screen 4 are reciprocatable.
Patent GB-354682-A (GB)
Title: Improvements in or relating to means for removing excess lubricant from engine cylinders
IPC: F01M11/00
Filed: 1931-02-03
Abstract: 354,682. Removing excess cylinder lubricant. SULZER FR—RES SOC. ANON., Winterthur, Switzerland. Feb. 3, 1931, No. 3458. Convention date, March 28, 1930. [Class 122 (i).] One or more parts 8, for removing excess cylinder lubricant collected by the scraper rings, are each in the form of a passage long circumferentially and narrow axially whose orifice is inclined at an angle B to a plane perpendicular to the cylinder axis.. The outer orifice of each passage is arranged nearer the crank shaft than the inner orifice and oil draining therefrom is collected in drip trays and returned to the sump.
Patent GB-946871-A (GB)
Title: Process and apparatus for moulding elastomeric materials
IPC: B29C31/06
Filed: 1961-01-31
Abstract: 946,871. Moulding O-rings. R. G. C. JENKINS. (Plastic & Rubber Products Co.). Jan. 31, 1961, No. 3656/61. Heading B5A. A process for moulding and curing a heat curable elastomer comprises the steps of placing a blank B of uncured elastomer between dies 10 which co-operate when closed to form a mould. ing cavity, alternately and in rapid succession closing and separating the dies so as to alternately compress the blank and allow it to expand until the blank becomes heated by internal friction, then closing the dies to confine the blank and applying external heat to the confined blank until it is cured. Fig. 5 shows part of a section through dies 10 for making 0-rings, the blank B being cut from a billet 22 of uncured rubber. On each successive movement of the dies 10 towards each other, the surfaces 14 and 16 move closer together, so that finally the blank B is cut from the billet 22, the blank being smaller than the cavity enclosing it by the air spaces left on either side of the blank as shown in Fig. 7. Alternatively the blank B may be cut from the billet by the first closure of the dies 10 and subsequent movements of the dies used to effect heating of the blank only. By variation of the die closing speed the size of the blank may be varied due to the action of the surfaces 18, 20, and 24 of the dies. The blank expands to fill the mould cavity, the entrapped gas, except that in the central space 30, escaping between the dies, and then expands into the space 30, the gas therein being dispersed throughout the middle of the ring (Figs. 8 and 9, no shown). The dies 10 are held at different temperatures to obtain a good heat transfer through the blank.
Patent GB-980437-A (GB)
Title: Ship hull form
IPC: B63B1/06
Filed: 1961-01-31
Abstract: 980,437. Ships with bulbous bows and sterns. T. INUI. Jan. 31, 1961 [Feb. 1, 1960; July 20, 1960], No. 3665/61. Headings B7A and B7M. A ship hull form having a predetermined geometry is provided with a bow and/or a stern bulb arranged to provide a wave pattern in antiphase with the wave pattern produced by the hull (Fig. 9), and such that at a predetermined speed and draft where #is the angle of propagation of an elementary wave measured from the direction opposite to the motion of the ship and A(#), B(0), typical variations of which, with #, are shown in Fig. 10, are functions dependent on the hull and bulb forms respectively. The bulbs may be spherical, and boundary layer control may be applied to the stern bulb to prevent separation. A bulb may be movable to compensate for draft variations either hydraulically or by a unit and screw gear (Fig. 14) driven by an electric motor, and this movement may be controlled automatically by a float or by water pressure responsive means. The width of the bulb may also be varied as the draft varies.
Patent GB-1461213-A (GB)
Title: Detachable coupling
IPC: A61G7/10
Filed: 1975-01-28
Abstract: 1461213 Hook fastenings A C BAKKER 28 Jan 1975 [17 June 1974] 3672/75 Heading E2A  A releasable hook-coupling for supporting a disabled person (Fig. 1, not shown) comprises a pair of spaced cheek plates 9, 10 having upwardly facing hooks 13, 13 guarded by a latch-spring 14, and a tie rod 25 which fits between the cheek plates with its transverse load-bearing bar 26 lying in the hooks 13, and a socket 28 on projection 27 engaged by screw 17 to prevent accidental release. In a modified form, (Figs. 8-10, not shown) the bar 26 is replaced by a downwardly facing hook which engages a bar spanning the cheeks.
Patent GB-1527214-A (GB)
Title: Infinitely variable transmissions
IPC: F16H61/662
Filed: 1977-01-31
Abstract: 1527214 Expanding-pulley gearing; clutch control VAN DOORNE'S TRANSMISSIE BV 31 Jan 1977 [9 Feb 1976] 03785/77 Headings F2D and F2L In an expanding-pulley gearing having a driving pulley 1 and a driven pulley 2, hydraulic fluid supplied by a pump 20 driven by the drive motor setting the transmission ratio, the pulley 1 is driven from the drive motor through a fluid-actuated clutch 9 which is only engaged when sufficient fluid pressure is present for the transmission to function. The pump 20 supplies pressure to a chamber 8 in pulley 1 through a control valve 22 operated by a lever 24. A follow-up linkage is provided between valve 22 and the movable flange of driven pulley 2. The pressure required to operate the transmission is set by a relief valve 31, the pressure acting against a spring 34 whose bias is varied with transmission ratio by a link 27. Once the required pressure is reached fluid flows through valve 31 to a line 35 for lubrication and to a line 36 to open a valve 37 and allow fluid pressure to be supplied to engage clutch 9. A pressure reducing valve 39 sets the clutchengaging pressure. The transmission may be controlled manually, by movement of lever 24, or by a system comparing a desired value with a measured value (e.g. output shaft speed). The valve 22 may also be controlled electromagnetically, by an electronically calculated signal. The drive motor may be electric.
Patent GB-664185-A (GB)
Title: Improvements in or relating to diene syntheses
IPC: C07C2/50
Filed: 1949-02-11
Abstract: Diene syntheses are carried out in a non-polar solvent in the presence of a strong acid which is soluble in the solvent; a "strong" acid is one which gives in M/10 aqueous solution an [H] not less than 0.095 gm.-ions per litre.  Suitable solvents are carbon tetrachloride, hexachlorethane, benzene, toluene and petroleum ether. Suitable acids are the hydrohalic acids and organic sulphonic acids, e.g. of naphthalene and anthracene. Examples show the dimerization of cyclopentadiene and the addition of cyclopentadiene to quinone. Other reactions referred to are the addition of cyclopentadiene to a -naphthoquinone and of butadiene to maleic anhydride and acrolein.
Patent GB-1383303-A (GB)
Title: Nuclear reactors
IPC: G21C5/08
Filed: 1971-02-03
Abstract: 1383303 Moderator structures BRITISH NUCLEAR DESIGN & CONSTRUCTION Ltd 26 Jan 1972 [3 Feb 1971] 3853/71 Heading G6C A moderator structure comprises a plurality of parallel vertical columns, which make mutual contact at particular levels, and restraint means for holding the columns together, at least some of the peripheral columns being divided into sections disposed end-to-end and connected together by hinge means which engage adjacent ends of adjoining sections in a manner permitting relative pivoting movement of the sections about a horizontal axis whilst preventing relative displacement of the adjacent ends transverse to this axis. As shown, the peripheral columns are each divided into sections 18, 20, 22 at each of the levels and the sections are pivotally connected together by rollers 19, 21 accommodated in recesses formed in the ends of the sections. The weight of the section or sections disposed above a section 20 causes it to exert a substantially horizontal force R towards the left, which force is transmitted via a projection 24 formed on section 20 to a part cylindrical projection 26 formed on an adjacent column 10. A tie band 14 engages the section 22 of each peripheral column and the horizontal component r of the force R is reacted on to this tie band. Differential thermal expansion in the horizontal direction between the columns 10 and the tie band 14 is accommodated by rotation of the section 20 about the lower roller 21. The upper end of section 20 and the lower end of section 18 are so shaped that when the reactor is shut down and the structure is cool the sections 18, 20 are in contact over a substantial portion of their end faces; the force R is then zero or very small and movement of columns into and out of the structure is facilitated. Means other than the tie band 14 can be used for providing radial support, e.g. support means attached to, and extending radially from, a wall of a pressure vessel surrounding the structure could be used.
Patent GB-343718-A (GB)
Title: Improvements relating to hydraulically operated machine tools
IPC: B24B19/12
Filed: 1930-02-05
Abstract: 343,718. Hydraulically - operated machine tools. CHURCHILL MACHINE TOOL CO., Ltd., Broadheath, near Manchester, and ASBRIDGE, H. H., Claremont, Washway Road, Ashton-on-Mersey. Feb. 5, 1930, No. 3876. [Class 60.] Driving and feed devices.-In a machine tool, for example, a machine for grinding crank shafts, the table b carrying the work e is moved from one grinding position to the next, as determined by a stop 5 and a notched bar 7 on the table, by a piston g moving under hydraulic pressure in a cylinder h, the motion being slowed down as the table approaches its desired position. The movement of the table is controlled by a valve n in a casing k and actuated, through a link 23, by a handle m, the exhaust pipe t leading to a spring-closed valve v in a casing u. The valve v is depressed, to open it, by an arm y on a shaft z connected to a plate 2 pressed upwardly by a spring 3 to engage the stop 5, which is slidable in a slide 8, and may be moved by a handle 9; the slide 8 may be adjusted relatively to the bed a, thus giving a fine adjustment to the table b, by a screw operated by a handle 13. The table is moved by depression of the stop 5 by the handle 9 and actuation of the valve n, the handle 9 then being released, so that, as the stop rises, the valve v is closed gradually, thus throttling the exhaust and slowing down the table. In order to prevent actuation of the table b whilst the grinding- wheel f is in the operative position, a handle 21 controlling the movement of the grinding-wheel is provided with a bar 20 having an enlarged end and resting on a pin 24, a stem 18 being supported on the bar and having at its top a V-block 17 with which engages a roller 22 on the handle m. The block 17 holds the handle m to position the valve n in neutral position when the handle 21 is in position to locate the grinding-wheel in the operative position, so that the valve n cannot be operated to move the table b. The valve v has therein a small byepass opening 25.